More Devices, Less Energy. The Future of Tech is Here.

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More evidence that the trend I’ve been reporting for years is not slowing down.

Associated Press:

NEW YORK (AP) — The average amount of electricity consumed in U.S. homes has fallen to levels last seen more than a decade ago, back when the smartest device in people’s pockets was a Palm pilot and anyone talking about a tablet was probably an archaeologist or a preacher.

Because of more energy-efficient housing, appliances and gadgets, power usage is on track to decline in 2013 for the third year in a row, to 10,819 kilowatt-hours per household, according to the Energy Information Administration.

That’s the lowest level since 2001, when households averaged 10,535 kwh. And the drop has occurred even though our lives are more electrified.

Here’s a look at what has changed since the last time consumption was so low.

BETTER HOMES

In the early 2000s, as energy prices rose, more states adopted or toughened building codes to force builders to better seal homes so heat or air-conditioned air doesn’t seep out so fast. That means newer homes waste less energy.

Also, insulated windows and other building technologies have dropped in price, making retrofits of existing homes more affordable. In the wake of the financial crisis, billions of dollars in Recovery Act funding was directed toward home-efficiency programs.

BETTER GADGETS

Big appliances such as refrigerators and air conditioners have gotten more efficient thanks to federal energy standards that get stricter ever few years as technology evolves.

A typical room air conditioner — one of the biggest power hogs in the home — uses 20 percent less electricity per hour of full operation than it did in 2001, according to theAssociation of Home Appliance Manufacturers.

Central air conditioners, refrigerators, dishwashers, water heaters, washing machines and dryers also have gotten more efficient.

Other devices are using less juice, too. Some 40-inch LED televisions bought today use 80 percent less power than the cathode ray tube televisions of the past. Some use just $8 worth of electricity over a year when used five hours a day — less than a 60-watt incandescent bulb would use.

Those incandescent light bulbs are being replaced with compact fluorescent bulbs and LEDs that use 70 to 80 percent less power. According to the Energy Department, widespread use of LED bulbs could save output equivalent to that of 44 large power plants by 2027.

The move to mobile also is helping. Desktop computers with big CRT monitors are being replaced with laptops, tablet computers and smart phones, and these mobile devices are specifically designed to sip power to prolong battery life.

It costs $1.36 to power an iPad for a year, compared with $28.21 for a desktop computer, according to the Electric Power Research Institute.

5 thoughts on “More Devices, Less Energy. The Future of Tech is Here.”


  1. Note the shading on the lower panels. Trees and solar panels can coincide, but several things must happen to do so. In this case, the house is receiving shade from the tree, lowering the cooling burden and making the envelope more livable.

    This is what I’m working on right now, including finishing a book in the next week or so about it.

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